Welcome to Citizendium: Difference between revisions

From Citizendium
Jump to navigation Jump to search
imported>David E. Volk
(DNA Article of the Week)
(trying to simplify the landing page)
 
(734 intermediate revisions by 44 users not shown)
Line 1: Line 1:
<br>__NOTOC__ __NOEDITSECTION__
__NOTOC__ __NOEDITSECTION__
<!-- {| align=center style="width:70%; border: solid 3px #CCCC66; padding: 3px;"
<!--<div style="height:1em"></div>-->
|-
{|
|[[Image:Writeathon.png|left|54px]]<center><BIG>'''The global [[CZ:Monthly Write-a-Thon|Write-a-Thon]] is on!</BIG><br />''Join us today, Wednesday, May 7th!'''''</center><br />
<br>You're invited to start a new article when it's Wednesday in your part of the world, and edit somebody else's new article.
It's a '''[[CZ:Monthly Write-a-Thon|Write-a-Thon]]'''!  It's a wiki-whoopie, a cyber-social, a collaborative kegger!
<br>'''Are you new?'''  This is a good day to get a [[CZ:Quick Start|Quick Start]]!
|}<br>
--><!--{| align=center style="width:70%; border: solid 3px #CCCC66; padding: 3px;"
|-
|
|
<big><center>'''The July [[CZ:Monthly Write-a-Thon|Write-a-Thon]] is Wednesday!<br />Our theme is [[Biography|Biographies]].''' </center></BIG><br />
{| align=center style="width:70%; background-color: #f7f7a6; border: solid 3px #f2e0de; padding: 2px;" 
[[Image:Writeathon.png|left]] On Wednesday, July 2nd we're inviting all Citizens to come to the wiki, start a new article, and edit somebody else's new article.  It's a '''[[CZ:Monthly Write-a-Thon|Write-a-Thon]]'''!  It's a wiki-whoopie, a cyber-social, a collaborative kegger!  '''Are you new?'''  That's a good day to get a [[CZ:Quick Start|Quick Start]]!
|- align=center
|}<br>  
|style="background-color:#e8edd6;"|'''<span>New Blog Post</span>'''
-->{|
|-align=center
|-valign="center"
|'''<big>[https://driftingharbor.wordpress.com/2024/07/13/why-is-citizendium-deleting-articles/ Why is Citizendium deleting articles?]</big>'''<br/>
|style="width:50%; margin: 0 0 0 0; padding: 5px" colspan = 2; background:#fafafa|
|}
<br/>
=== '''Help Write Articles about our World''' ===


[[Image:Logo400grbeta_small.png|center]]
Welcome to '''Citizendium''', a wiki for providing free knowledge where authors use their '''real names'''. We regard information as a public good and welcome anyone who wants to share their knowledge on virtually any subject.  Our online community prides itself on being congenial and supportive.
{{Getting Started}}


|style="width:50%; margin: 0 0 0 0; padding: 5px" colspan = 2|
See '''<big>[[Special:RecentChanges|Recent Changes]]</big>'''&mdash;an overview of articles being worked on ''now''.


{|align="center" border="0" cellpadding="3" cellspacing="5"
===='''Become a member--it's free!'''====
|{{click|image=Natural_science_button.png|link=CZ:Workgroups#Natural_Sciences|width=30px|height=30px}}
'''[[Help:Index/Join|Join this wiki]]''' and '''[[CZ:How to start a new_article|start an article]]'''
|'''[[CZ:Workgroups#Natural_Sciences|Natural Sciences]]'''&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<br />&nbsp;<br />
|{{click|image=Social science button.png|link=CZ:Workgroups#Social_Sciences|width=30px|height=30px}} ||align="left"|'''[[CZ:Workgroups#Social_Sciences|Social Sciences]]'''&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Browse the Workgroups:
|{{click|image=Humanities button.png|link=CZ:Workgroups#Humanities|width=30px|height=30px}} ||align="left"|'''[[CZ:Workgroups#Humanities|Humanities]]'''
<small><b>
|-
{|style="width:90%; border: solid 1px #f0e6ed; background: #fff5d1; margin: 0 0 0 0; padding: 1px;"
|{{click|image=Arts button.png|link=CZ:Workgroups#Arts|width=30px|height=30px}} ||align="left"|'''[[CZ:Workgroups#Arts|Arts]]'''&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
|-
|{{click|image=Applied arts button.png|link=CZ:Workgroups#Applied Arts and Sciences|width=30px|height=30px}}
| [[:Category:Agriculture Workgroup|Agriculture]]
|align="left"|'''[[CZ:Workgroups#Applied Arts and Sciences|Applied Arts and <br>Sciences]]'''&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
| [[:Category:Earth Sciences Workgroup|Earth Sciences]]
|{{click|image=Recreation button.png|link=CZ:Workgroups#Recreation|width=30px|height=30px}}
| [[:Category:Journalism Workgroup|Journalism]]
|align="left"| '''[[CZ:Workgroups#Recreation|Recreation]]'''
| [[:Category:Physics Workgroup|Physics]]
|-
| [[:Category:Anthropology Workgroup|Anthropology]]
| [[:Category:Economics Workgroup|Economics]]
| [[:Category:Law Workgroup|Law]]
| [[:Category:Politics Workgroup|Politics]]
|-
| [[:Category:Archaeology Workgroup|Archaeology]]
| [[:Category:Education Workgroup|Education]]
| [[:Category:Library and Information Science Workgroup|Library & Info. Sci.]]
| [[:Category:Psychology Workgroup|Psychology]]
|-
| [[:Category:Architecture Workgroup|Architecture]]
| [[:Category:Engineering Workgroup|Engineering]]
| [[:Category:Linguistics Workgroup|Linguistics]]
| [[:Category:Religion Workgroup|Religion]]
|-
| [[:Category:Astronomy Workgroup|Astronomy]]
| [[:Category:Food Science Workgroup|Food Science]] 
| [[:Category:Literature Workgroup|Literature]]
| [[:Category:Robotics Workgroup|Robotics]]
|-  
| [[:Category:Biology Workgroup|Biology]]
| [[:Category:Games Workgroup|Games]]
| [[:Category:Mathematics Workgroup|Mathematics]]
| [[:Category:Sociology Workgroup|Sociology]]
|-
| [[:Category:Business Workgroup|Business]]
| [[:Category:Geography Workgroup|Geography]]
| [[:Category:Media Workgroup|Media]]
| [[:Category:Sports Workgroup|Sports]]
|-
| [[:Category:Chemistry Workgroup|Chemistry]]
| [[:Category:Health Sciences Workgroup|Health Sciences]]
| [[:Category:Military Workgroup|Military]]
| [[:Category:Theater Workgroup|Theater]]
|-
| [[:Category:Classics Workgroup|Classics]]
| [[:Category:History Workgroup|History]] 
| [[:Category:Music Workgroup|Music]]
| [[:Category:Topic Informant Workgroup|Topic Informant]]
|-
| [[:Category:Computers Workgroup|Computers]]
| [[:Category:Hobbies Workgroup|Hobbies]]
| [[:Category:Philosophy Workgroup|Philosophy]]
| [[:Category:Visual Arts Workgroup|Visual Arts]]
|}
|}
</b></small>
<br>
{| align=center style="width:90%; background-color: #80FF80; border: solid 3px #40FF40; padding: 2px;" 
|- align=center
|style="background-color:#40FF40;"|'''<span>Please help today!</span>'''
|-align=center
|'''<big>Please [[CZ:Donate|make your donations here]].</big>'''<br/>Donations go to keep our servers running. See our [[CZ:Financial report|financial report]].
|}
|}
{|style="width:50%; border: solid 1px #ffffff; margin: 0 0 0 0; padding: 2px; background:"|
<!--|- style="width:50%; border: solid 1px #e9e9e9; margin: 0 0 0 0; padding: 6px; background:#fafafa"|
|colspan = 2; valign=top|
=== The Geogra-Thon has begun!  Join us! ===
[[Image:Writeathon.png|left]] On Tuesday, November 27 we're inviting all Citizens to come to the wiki, start a new article, and edit somebody else's new article.  It's a '''[[CZ:Geography Workgroup/Gazetteer/Geogra-thon|Geography Write-a-Thon]]'''!  It's a wiki-whoopie, a cyber-social, a collaborative kegger!
|-->
|- style="width:50%; border: solid 1px #e9e9e9; margin: 0 0 0 0; padding: 6px; background:#fafafa"|
|colspan = 2; valign=top|


=== A new wiki encyclopedia project&mdash;and more! ===
<blockquote>
* We aim at reliability and quality, not just quantity.
 
* We welcome [[CZ:Group Editing|collaboration]] with everyone who has knowledge, broad or narrow, about any of the world's innumerable subjects.
 
* We write under our real names—and are both collegial and congenial.
 
* We now have [[:Category:CZ Live|{{Articles_number}}+ articles]] and are gathering speed.
 
* [[CZ:Eduzendium|Eduzendium]] participants write for academic credit.
 
 
 
 
 
 
</blockquote>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 


=== Write for the ''Citizendium''—knowledge is fun!===
* [[Special:RequestAccount|Sign up]]&mdash;we need both authors ''and'' editors (you might be both!)
* Then, [[CZ:Quick Start|get a quick start]].
* Remember, we are an open, young project—it's easy to get involved!


=== [[CZ:Home|Learn about us]] ===
* [[CZ:Why Citizendium?|Why Citizendium?]]
* For readers: [[CZ:About|About]]&nbsp;|&nbsp;[[CZ:FAQ|FAQ]]
* For contributors: [[CZ:The Author Role|Authors]]&nbsp;|&nbsp;[[CZ:The Editor Role|Editors]]&nbsp;|&nbsp;[[CZ:How to collaborate|How to collaborate]]
* [[CZ:Press|For the press]]


=== Important new community pages ===
* [http://www.watchknow.org WatchKnow] will be a free, non-profit, K-12 educational video contest, currently under planning and development.
* [[CZ:Myths and Facts|Myths and Facts]]: we might be different than you think!
* We are organizing '''[[CZ:Workgroup Weeks|Workgroup Weeks]]'''--our biggest initiative yet.  Citizens, get involved, and watch our numbers multiply!


=== [[CZ:Donate|Support us]] ===
* Our mission is educational, [[Nonprofit organization|non-profit]], global, and [[Creative_Commons_CC-by-sa_3.0|free]].
* Shop at our [http://www.amazon.com/gp/search?ie=UTF8&tag=citizendiumor-20&index=books&linkCode=ur2&camp=1789&creative=9325 Amazon.com] and [http://www.barnesandnoble.com?lkid=J15314471&pubid=K123040&byo=1 Barnes &#38; Noble] links and we'll get donations at [[CZ:Donate#Buy_books_and_other_stuff_.28affiliate_programs.29|no cost to you.]]
* [[CZ:Friends of Citizendium|Link to us]] so search engines can better find us.
&nbsp;
[[Image:Water drop crop.jpg|center|thumb|300px|{{#ifexist:Template:Water drop crop.jpg/credit|{{Water drop crop.jpg/credit}}<br/>|}}Each sentence you add is another drop in an expanding sea of words.]]


|style="width:50%; border: solid 1px #e9e9e9; margin: 0 0 0 0; padding: 6px; background:#fafafa" colspan=2 valign=top|
{|style="padding-bottom:0cm"
|-
|width=60%|
=== Some of our finest <font size=1>[ [[CZ:Approval Process|about]] ] </font> ===
[[Image:Approved.png|35px|35px|left]]
:* [[:Category:Approved Articles|Approved Articles]]
:* [[:Category:Developed Articles|Developed Articles]] <font size=1>(over 800)</font>
|width=40% align=center|
{|class="wikitable"
|-
|<div style="background-color:lightyellow; color:darkblue; font-size:90%"><center>'''Share your knowledge. It's a way to achieve immortality.'''</center><br><center>&mdash;'''Often attributed to the Dalai Lama'''</center></div>
|}
|}
=== Article of the Week <font size=1>[ [[CZ:Article of the Week|about]] ]</font> ===
[[Image:DNA-Animation.gif|thumb|220px|Three-dimensional model of the structure of part of a DNA double helix.]]
'''Deoxyribonucleic acid ([[DNA]])''' is a very large biological [[molecule]] that is vital in providing information for the development and reproduction of living things. Every living organism has its own DNA sequence that is like a unique 'barcode' or 'fingerprint'. This inheritable variation in DNA is the most important factor driving evolutionary change over many generations. But, beyond these general characteristics, what "exactly" is DNA? What are the precise physical attributes of this molecule that make its role so centrally imposing in understanding [[life]]?


DNA is a long [[polymer]] of simple units called [[nucleotides]], held together by a [[sugar]] [[phosphate]] backbone. Attached to each sugar molecule is a molecule of one of four ''[[bases]]''; [[adenine]] (A), [[thymine]] (T), [[guanine]] (G) or [[cytosine]] (C), and the order of these bases on the DNA strand encodes information. In most organisms, DNA is a [[double-helix]] (or duplex molecule) consisting of two DNA strands coiled around each other, and held together by [[hydrogen bonds]] between bases. Because of the chemical nature of these bases, adenine always pairs with thymine and guanine always pairs with cytosine. This ''complementarity'' forms the basis of [[semi-conservative DNA replication]] &mdash; it makes it possible for DNA to be copied relatively simply, while accurately preserving its information content.  <font size=1>[[DNA|['''more...''']]]</font>




=== New Draft of the Week <font size=1>[ [[CZ:New Draft of the Week|about]] ]</font> ===
|rowspan=2 style="width:50%; border:1px solid #e9e9e9; border-color:rgba(0,0,0,0.05); margin:0; padding:0; background:#fafafa; background:rgba(255,255,255,0.6); vertical-align:top; -moz-border-radius:0 10px 10px;  -webkit-border-radius:10px;  -webkit-border-top-left-radius:0; -moz-background-clip:padding; -webkit-background-clip:padding;"|
The International Olympic Committee was established in order to deal with the increasing problem of doping in the sports world and follows three fundamental principals, protecting the health of athletes, respecting medical and sports ethics, and ensuring equality for all athletes. The list of '''[[drugs banned from the Olympics]]''' is determined by the World Anti-Doping Agency. The banned substances and techniques fall into the following categories: androgenic agents, blood doping, peptide hormones, stimulants, diuretics, narcotics and cannabinoids. The use of alcohol (ethanol) is banned in selected sports only during actual competition.
{|cellspacing=0 style="width:100%; padding:0; margin:0; background:transparent;"
<font size=1>[[Drugs banned from the Olympics|['''more...''']]]</font>
|-
|valign=top style="padding:1em 1em 0.75em;"|
<h4 style="margin:0 0 0.75em; padding:0;"> '''Article counts''' </h4>
<p style="line-height:15px; padding-left:20px;">
[[:Category:Citable versions of articles|Citable]] <font size=1>('''{{PAGESINCAT:Citable versions of articles}}''')</font><br />
[[:Category:Developed Articles|Developed]] <font size=1>('''{{PAGESINCAT:Developed Articles}}''')</font><br />
[[:Category:Developing Articles|Developing]] <font size=1>('''{{PAGESINCAT:Developing Articles}}''')</font><br />
[[:Category:Stub Articles|Stubs]] <font size=1>('''{{PAGESINCAT:Stub Articles}}''')</font><br />
<small>([[:Category:CZ Live|{{PAGESINCAT:CZ Live}} total]])</small>
</p>
|style="vertical-align:top; overflow:hidden; padding:0 0 1em;"|
{{CZ:Quote}}
{{-}}
|-
|valign=top style="padding:0 1em 0.5em;" colspan=2|
----<h3 style="margin-top:0; padding-top:0.6em; border-top:1px dotted #e0e0e0;">
<big>[[CZ:Featured article|Featured Article]]: ''[[{{FeaturedArticleTitle}}]]''</big>
</h3>
{{CZ:Featured article/Current}}
|}
|}
<div style='text-align: right;'><small>''[[{{FeaturedArticleTitle}}|Continued]]...''</small></div>

Latest revision as of 09:47, 31 October 2024

New Blog Post
Why is Citizendium deleting articles?


Help Write Articles about our World

Welcome to Citizendium, a wiki for providing free knowledge where authors use their real names. We regard information as a public good and welcome anyone who wants to share their knowledge on virtually any subject. Our online community prides itself on being congenial and supportive.

Citizendium Getting Started
Quick Start | About us | Help system | Start a new article | For Wikipedians  


See Recent Changes—an overview of articles being worked on now.

Become a member--it's free!

Join this wiki and start an article
 
Browse the Workgroups:

Agriculture Earth Sciences Journalism Physics
Anthropology Economics Law Politics
Archaeology Education Library & Info. Sci. Psychology
Architecture Engineering Linguistics Religion
Astronomy Food Science Literature Robotics
Biology Games Mathematics Sociology
Business Geography Media Sports
Chemistry Health Sciences Military Theater
Classics History Music Topic Informant
Computers Hobbies Philosophy Visual Arts


Please help today!
Please make your donations here.
Donations go to keep our servers running. See our financial report.





















Article counts

Citable (146)
Developed (1,129)
Developing (7,403)
Stubs (7,676)
(16,484 total)

What does education often do? It makes a straight-cut ditch of a free, meandering brook.
Henry David Thoreau

       —add a quotation about knowledge or writing


Featured Article: Nuclear power reconsidered

After decades of failure to slow the rising global consumption of coal, oil and gas,[1] many countries have proceeded as of 2024 to reconsider nuclear power in order to lower the demand for fossil fuels.[2] Wind and solar power alone, without large-scale storage for these intermittent sources, are unlikely to meet the world's needs for reliable energy.[3][4][5] See Figures 1 and 2 on the magnitude of the world energy challenge.

Nuclear power plants that use nuclear reactors to create electricity could provide the abundant, zero-carbon, dispatchable[6] energy needed for a low-carbon future, but not by simply building more of what we already have. New innovative designs for nuclear reactors are needed to avoid the problems of the past.

(CC) Image: Geoff Russell
Fig.1 Electricity consumption may soon double, mostly from coal-fired power plants in the developing world.[7]

Issues Confronting the Nuclear Industry

New reactor designers have sought to address issues that have prevented the acceptance of nuclear power, including safety, waste management, weapons proliferation, and cost. This article will summarize the questions that have been raised and the criteria that have been established for evaluating these designs. Answers to these questions will be provided by the designers of these reactors in the articles on their designs. Further debate will be provided in the Discussion and the Debate Guide pages of those articles.

Footnotes

  1. Global Energy Growth by Our World In Data
  2. Countries, organizations, and public figures that have reconsidered their stance on nuclear power are listed on the External Links tab of this article.
  3. Pumped storage is currently the most economical way to store electricity, but it requires a large reservoir on a nearby hill or in an abandoned mine. Li-ion battery systems at $500 per KWh are not practical for utility-scale storage. See Energy Storage for a summary of other alternatives.
  4. Utilities that include wind and solar power in their grid must have non-intermittent generating capacity (typically fossil fuels) to handle maximum demand for several days. They can save on fuel, but the cost of the plant is the same with or without intermittent sources.
  5. Mark Jacobson believes that long-distance transmission lines can provide an alternative to costly storage. See the bibliography for more on this proposal and the critique by Christopher Clack.
  6. "Load following" is the term used by utilities, and is important when there is a lot of wind and solar on the grid. Some reactors are not able to do this.
  7. Fig.1.3 in Devanney "Why Nuclear Power has been a Flop"